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Stephen Day

Gas Safe Engineer at iHeat

Stephen Day is a Gas Safe registered and FGAS certified engineer with over 20 years of hands-on experience in the heating, cooling, and renewable energy industry, specialising in boiler installations, air conditioning, and heat pump systems.

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About Stephen Day

Stephen Day is a Gas Safe registered and FGAS certified engineer with over 20 years of hands-on experience in the heating, cooling and renewable energy industry.

Throughout his career, Stephen has designed, installed and maintained thousands of systems across homes and businesses in the UK. His background on the tools, combined with his directorship role at iHeat, gives him a rare understanding of both the technical and operational sides of the industry.

He has helped to secure Which? Trusted Trader accreditation all with a focus on delivering great service and long-term value for customers. He also writes for the iHeat blog, sharing practical advice and explaining heating topics in plain, helpful language.

Stephen continues to stay up to date with the latest heating technologies, building regulations and low-carbon innovations.

Gas Safe ID: 5910722

Expertise

  • Boiler systems and installation
  • Heat pumps and hybrid heating systems
  • Gas safety and compliance
  • System design
  • Renewable and low-carbon technologies
  • Technical training


Articles by Stephen Day are reviewed by iHeat’s technical team for accuracy and reliability.

Stephen Day's latest articles

Checking Your Boiler When Buying a New Home

09th October, 2025 Advice

Checking Your Boiler When Buyi...

Buying a new home is a massive investment and you’ll likely consider a number of different...

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Can A New Boiler Increase the Value of My House?

09th October, 2025 Advice

Can A New Boiler Increase the...

Have you considered a new boiler to increase the value of your home? We run through why th...

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Why Buying a Budget Boiler May Cost You More in The Long-Run

09th October, 2025 Advice

Why Buying a Budget Boiler May...

Finding out your boiler needs replacing can be incredibly frustrating, especially during t...

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ATAG Boiler Prices

09th October, 2025 Reviews

ATAG Boiler Prices

With nearly 70, yes 70 years of designing and manufacturing boilers behind them, ATAG can...

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Alpha Combi Boiler Costs

09th October, 2025 Guides

Alpha Combi Boiler Costs

The price of an Alpha combi boiler is contingent upon several factors, such as the specifi...

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Are Heat Pumps More Efficient than Gas Boilers?

22nd September, 2025 Comparisons

Are Heat Pumps More Efficient...

This blog comprehensively compares heat pumps and gas boilers, focusing on their efficienc...

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iHeat Support Gas Safety Week 2025

11th September, 2025 Guides

iHeat Support Gas Safety Week...

Gas Safety Week 2025 is an important annual event that raises awareness of the dangers of...

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Viessmann Vitodens 100-W Combi Boiler Review

04th September, 2025 Reviews

Viessmann Vitodens 100-W Combi...

This beast of a combi boiler is one of the most sought-after models from Viessmann

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Alpha E-Tec NX Combi Boiler Review

04th September, 2025 Reviews

Alpha E-Tec NX Combi Boiler Re...

As a leading online boiler installation company, iHeat is committed to providing customers...

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Portable Vs Wall-Mounted Air Conditioning: Which Is Better?

19th August, 2025 Comparisons

Portable Vs Wall-Mounted Air C...

Portable and wall mounted air conditioning both have their own strengths and drawbacks dep...

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What Is A Condensate Pipe?

15th August, 2025 Advice

What Is A Condensate Pipe?

The condensate pipe allows water to be safely drained away from your home, let's drill int...

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Ferroli Boiler Prices

15th August, 2025 Reviews

Ferroli Boiler Prices

In this blog we will be exploring some of Italian heating giant Ferroli’s best boilers, ta...

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